17.10 Set Operations

Set Operations

x = {1, 2, 3, 4, 5}
y = {3, 4, 5, 6, 7}
print(x.intersection(y))  # prints {3, 4, 5}
print(x.difference(y))  # prints {1, 2}
print(x.symmetric_difference(y))  # prints {1, 2, 6, 7}
print(x.union(y))  # prints {1, 2, 3, 4, 5, 6, 7}

# here's some other ways to express set operations
print(x-y)  # same thing as difference
print(x&y)  # same thing as intersection

x = {'p', 'y', 't', 'h', 'o', 'n'}
y = {'c', 'o', 'd', 'i', 'n', 'g'}
x.intersection_update(y)
print(x)  # prints {'o', 'n'}

Practice

Open Mind